Multiple-fuse plug.



A. J. KALINOWSK.

MULTIPLE FUSE PLUG.

' I APPLIOATIYON 'FILED JULY 18, 1913. l

-1,1O3,"1"7"i.` Patented July 14,1914.

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l To all whom t may concern:

UNITED sTaTEs PATENT oEErcE.

` ALEXANDER J'. KALINOWSKI, 0F LYONS, COLORADO.

MULTIPLE-FUSE PLUG.

Specification of Letters Patent.

Patented July 14, 1914.

Be it known that I, ALEXANDER Jl KALI- 'i NowsKI, a citizen of the United States, re-

siding at Lyons, in the county of Boulder and State of Colorado, have invented new and useful Improvements in Multiple-Fuse Plugs, of which the following is. aspeciication.

This invention relates to improvements in multiple fuse plugs. j t

'Incarrying out the present invention, 1t is vmy urpose to rovide a multiple fuse plug w erein the usible elements may be i -'brought into service singly and one after the other as the same become burnt out or otherwise mutilated and wherein the component parts will be so correlated and arranged as to reduce the. possibility of derangement to' a minimum and enable the plug to be readily disassembled so that the fusible elements may be renewed when occalsion demands.

It is also my purpose to provide a multiple fuse plug which will embrace the' desired features of simplicity, eicienoy and durability, one which may be manufactured and marketed at' a minimum expense and one which may be readily installed in and renewed from an electric circuit.

With the. above and other objects in view, the invention consists in the construction, combination yand arrangement of arts v hereinafter set forth in and .falling within the scope of the claims.

In the accompanying drawing, Figure 1 is a view in elevation of a multiple fuse plug constructed in accordance with my present invention. F ig.y 2 is a vertical sectional view through the plug. Fig. 3 is a bushing 4 receiving a contact screw 5, and "at opposite sides of the central opening in the partition 3 are passages 6, 6 leading into the respective chambers or compartments. In the present instance, the outer wall of the body at a point approximately centrally of its length is circumferentially reduced and has such reduced portion tapered or beveled inwardly as at 7 for a suitable distance, the remaining part .of such circum- Y ferentially reduced portion being of uniform diameter as at 8. The tapering portion of the outer wall of the body is formed with a number of transverse grooves 9, two being shown in this instance and disposed at diametrically opposite points and each groove adjacent to one .end thereof opens into a recess 10 formed in the body, while the opposit-e end communicates with one of the chambers formed by the`partition 3 by wayof an aperture 11. Disposed within each chamber or compartment formed by the partition 3 and the adjacent portion of the wall of the b ore 2 is a fusible element 12 having one end thereof passed throu h the respective passage 6 and secured to t e contact screw and the opposite end thereof passed through the a erture 11 and lying upon the lower wall ofp the respective groove 9 and bent upon itself and extended into the recess 10 contiguous such groove. Thus, it will be seen that the outer portion of the fusible elements 12,1ying within the grooves 9, 9 are disposed in a plane below that of the outer wall of the body 1.

Surrounding the outer wall of the body 1 and of a configuration conforming to the contour thereofis a shell 13 preferably formed of brass and having the relatively large end thereof formed toprovide shells 14 adapted to engage the socket with which the plug coperates. The portion of the shell 13 between the large and small ends thereof, that is the part of the shell corresponding to the portion 7 ofthe outer wall of the body 1 is stamped or cut out to provide an inwardly projecting contact strip 15 adapted to aline with one or the other ofthe grooves 9 and engage the adjacent portion of the respective fusible element so that the shell and contact screw will complete the circuit, as is w'ell known. rounding the relatively small end of the body 1 and the like end of the shell 13 is a Cap 16 constructed of vporcelain orv other analogous material and having one end of the bore thereof diverging outwardly as at 17 so as to ovel'lic the intermediate portions Surof the shell and body. Thus, the plug, when 'the constituent parts thereof are assembled, is given a substantially uniform shape.

i From the'foregoing description'talen in connection with the accompanying drawing, the construction, mode of operatlon and manner of employing my invention will be lreadilyr apparent. Assuming the parts to be assembled as illustrated in lig. 2 and connected in the electric circuit, it will be seen that the circuit is established through the contact screw 5, the portion ofthe shell 13 within the socket and the fusible element 12 in engagemeiuJ with lthe Contact strip' 15 on the shell, the other fuse being cut out of the circuit incident to the exposed portion thereof lying in a plane below that of the shell. Should the active fuse become burnt out or otherwise mutilated, it is only necessary to remove the cap 16 to withdraw the body a slight distance from the shell and rotate such body so that, the groove 9 carrying the respective end of the remaining fuse will be brought into registration with the strip 15, the body being now forced into the shell whereby the strip 15 on the shell is engaged with the adjacent portion of the fusible element.

It will be seen that ,l have provided a multiple fuse plug whereby the fusible elementsniay be placed in circuit successively as the same become burnt out or mutilated and wherein such elements may be readily renewed or replaced.

lVhile I have herein shown and described one preferred form of my invention by way of illustration, I desire to have it understood that I do not limit or confine myself to the precise details of construction herein described and delineated, as modification and variation may be made within the scope of the claims without departing from the spirit of the invention. Furthermore, I wish it to be understood that the capacity of the plug may be increased and such is contemplated.

I claim:

1. A. fuse plug comprising a body, a contact carried by said body, fusible elements each having one end secured to said Contact and the opposite end in engagement with the niet,

outer surface of the body, a shell surrounding said body, a strip stamped rom said shell and in engagement with the outer end of one of said elements and capable of engaging the outer end of the rema1n1ngele ment, and a cap for said body.

2. A fuse plug comprising a body, a contact carried by said body, fusible elements each having one end secured to said contact and the opposite end in engagement with the outer surface of the body, a shell surrounding said body, a strip stamped from said shell and in engagement with the outer end of one. of said elements and capable of engaging the outer end of-the remaining element, a cap for said body, and a connection between said cap and shell.

3. A fuse plug comprising a body having the outer wall thereof circumferentially reduced and the reduced part tapered for a portion of its length and of a uniform diameter for the remaining portion of its length, the tapered portion being formed with grooves, said body being further formed with a longitudinal bore having a closed end formed with a center opening and passages at opposite sides of such opening, a partition within the bore and dividing the same into chambers or compartments, fusipered portion of the outer wall of the body to place the respective fusible element in the circuit, and a cap for said body.

In testimony whereof I aflixrrny signature in presence of two witnesses.

ALEXANDER J. KALINOWSKI. Witnesses:

M. J. SCNLON, En. MCCALL.

Copies of this patent may be obtained fu' five cents each, by addressing the Commissioner of retentir.

Washing-ton, D. C. 

